785986851 has 48 divisors (see below), whose sum is σ = 1219608320. Its totient is φ = 446342400.

The previous prime is 785986841. The next prime is 785986897. The reversal of 785986851 is 158689587.

It is a happy number.

It is not a de Polignac number, because 785986851 - 2⁶ = 785986787 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 785986791 and 785986800.

It is not an unprimeable number, because it can be changed into a prime (785986811) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1245306 + ... + 1245936.

Almost surely, 2^785986851 is an apocalyptic number.

785986851 is a deficient number, since it is larger than the sum of its proper divisors (433621469).

785986851 is a wasteful number, since it uses less digits than its factorization.

785986851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 707 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 57.

The square root of 785986851 is about 28035.4570321227. The cubic root of 785986851 is about 922.8655341529.

The spelling of 785986851 in words is "seven hundred eighty-five million, nine hundred eighty-six thousand, eight hundred fifty-one".